Hot Diesel Products
100% Customer Satisfaction
"My Diesel Performance Chip Paid For Itself In 3 MONTHS!" - Robert Allen, Houston, TX
"My Mileage Increased By 18% With The Diesel Performance Chip From Parley's Diesel!" - Dave R., Logan, UT
"The Quadzilla Stealth Tuner that I bought from you guys is AMAZING! It feels like I DOUBLED my horsepower!" - Charles St. Claire, Knoxville, TN
"The only thing my truck was missing was the sound of a mean, high performance vehicle and the Aero Turbine Muffler got me there!" - Ted Lee, Sacramento, CA
Chevy/GMC Duramax
Parleys Diesel Performance carries a full line of GMC/Chevy Duramax Diesel Performance Parts. Here’s a list of some of the most popular Duramax Diesel upgrades below.
Chevy/GMC Duramax 6.6L LMM Diesel Performance Upgrades
- Chevy/GMC Duramax 6.6L LMM Diesel Performance Tuners, Downloaders & Modules
- Chevy/GMC Duramax 6.6L LMM Diesel Exhaust Systems & Components
- Chevy/GMC Duramax 6.6L LMM Diesel Exhaust Stacks
- Chevy/GMC Duramax 6.6L LMM Diesel Cold Air Intake Systems
- Chevy/GMC Duramax 6.6L LMM Diesel Water-Methanol Injection Kits
- Chevy/GMC Duramax 6.6L LMM Diesel Propane Injection Kits
- Chevy/GMC Duramax 6.6L LMM Diesel Head Studs & Main Studs
- Chevy/GMC Duramax 6.6L LMM Diesel Gauges & Pillar Pods
- Chevy/GMC Duramax 6.6L LMM Diesel Lift Pumps & Fuel Preporators
- Chevy/GMC Duramax 6.6L LMM Diesel Fuel Injection Pumps
- Chevy/GMC Duramax 6.6L LMM Diesel Differential Covers & Transmission Pans
- Chevy/GMC Duramax 6.6L LMM Diesel Turbo Upgrades
- Chevy/GMC Duramax 6.6L LMM Diesel Truck Accessories
Chevy/GMC Duramax 6.6L LBZ Diesel Performance Upgrades
- Chevy/GMC Duramax 6.6L LBZ Diesel Performance Tuners, Downloaders & Modules
- Chevy/GMC Duramax 6.6L LBZ Diesel Exhaust Systems & Components
- Chevy/GMC Duramax 6.6L LBZ Diesel Exhaust Stacks
- Chevy/GMC Duramax 6.6L LBZ Diesel Cold Air Intake Systems
- Chevy/GMC Duramax 6.6L LBZ Diesel Water-Methanol Injection Kits
- Chevy/GMC Duramax 6.6L LBZ Diesel Propane Injection Kits
- Chevy/GMC Duramax 6.6L LBZ Diesel Head Studs & Main Studs
- Chevy/GMC Duramax 6.6L LBZ Diesel Gauges & Pillar Pods
- Chevy/GMC Duramax 6.6L LBZ Diesel Lift Pumps & Fuel Preporators
- Chevy/GMC Duramax 6.6L LBZ Diesel Fuel Injection Pumps
- Chevy/GMC Duramax 6.6L LBZ Diesel Differential Covers & Transmission Pans
- Chevy/GMC Duramax 6.6L LBZ Diesel Turbo Upgrades
- Chevy/GMC Duramax 6.6L LBZ Diesel Truck Accessories
Chevy/GMC Duramax 6.6L LLY Diesel Performance Upgrades
- Chevy/GMC Duramax 6.6L LLY Diesel Performance Tuners, Downloaders & Modules
- Chevy/GMC Duramax 6.6L LLY Diesel Exhaust Systems & Components
- Chevy/GMC Duramax 6.6L LLY Diesel Exhaust Stacks
- Chevy/GMC Duramax 6.6L LLY Diesel Cold Air Intake Systems
- Chevy/GMC Duramax 6.6L LLY Diesel Water-Methanol Injection Kits
- Chevy/GMC Duramax 6.6L LLY Diesel Propane Injection Kits
- Chevy/GMC Duramax 6.6L LLY Diesel Head Studs & Main Studs
- Chevy/GMC Duramax 6.6L LLY Diesel Gauges & Pillar Pods
- Chevy/GMC Duramax 6.6L LLY Diesel Lift Pumps & Fuel Preporators
- Chevy/GMC Duramax 6.6L LLY Diesel Fuel Injection Pumps
- Chevy/GMC Duramax 6.6L LLY Diesel Differential Covers & Transmission Pans
- Chevy/GMC Duramax 6.6L LLY Diesel Turbo Upgrades
- Chevy/GMC Duramax 6.6L LLY Diesel Truck Accessories
Chevy/GMC Duramax 6.6L LB7 Diesel Performance Upgrades
- Chevy/GMC Duramax 6.6L LB7 Diesel Performance Tuners, Downloaders & Modules
- Chevy/GMC Duramax 6.6L LB7 Diesel Exhaust Systems & Components
- Chevy/GMC Duramax 6.6L LB7 Diesel Exhaust Stacks
- Chevy/GMC Duramax 6.6L LB7 Diesel Cold Air Intake Systems
- Chevy/GMC Duramax 6.6L LB7 Diesel Water-Methanol Injection Kits
- Chevy/GMC Duramax 6.6L LB7 Diesel Propane Injection Kits
- Chevy/GMC Duramax 6.6L LB7 Diesel Head Studs & Main Studs
- Chevy/GMC Duramax 6.6L LB7 Diesel Gauges & Pillar Pods
- Chevy/GMC Duramax 6.6L LB7 Diesel Lift Pumps & Fuel Preporators
- Chevy/GMC Duramax 6.6L LB7 Diesel Fuel Injection Pumps
- Chevy/GMC Duramax 6.6L LB7 Diesel Differential Covers & Transmission Pans
- Chevy/GMC Duramax 6.6L LB7 Diesel Turbo Upgrades
- Chevy/GMC Duramax 6.6L LB7 Diesel Truck Accessories
